You can make 2 things! (if you have a PC ? )Press Tab and write the name of the plugin!Here the subdiv's name script is _Subdiv_6 (no sensitive case)Or make a shortcut ! Menu Options (bottom screen) / ShortCutsPut in the left column any combinaison of keysand on the right column _Subdiv_6 Have fun modeling !

Try with _subdiv_beta6 as you have in your list's files Sorry for the confusion, i had changed my name of file! After the writing name, of course Enter! Ps Of course you can make a Copy / Past of this name file from a Text file of numerous scripts! (because install more "easy" is some time losted at the beginning : play first with the toy) I have these Shortcuts for the "subdivision" modeling process)

It's OK I'll sort it out. All the mesh previews look unsmoothed when uploaded to the 3D printing websites. It's more noticeable in the first image....it could be because i'm trying to subdivide and then punch holes/fillet afterwards and it causes a messy mesh. The fillets are a different resolution to the subdivided mesh so some conflict will occur. I'll get there I'm just being silly.